Wrong encoding for node params

[MalteBellmann]

Description

When using addNodeParams from a MFE and then using getNodeParams afterwards from the same MFE, the parameters can be encoded wrongly and the output of getNodeParams is different from the input of addNodeParams.

Expected result

The output of getNodeParams is the same as the input of addNodeParams.

Actual result

Spaces in the input to addNodeParams will be transformed to + in the output of getNodeParams. Might also affect other characters.

Steps to reproduce

1. Call addNodeParams({q: "test abc"})
2. Wait for context update
3. Call getNodeParams()
4. See the result: {q: "test+abc"}

Changing shouldDesanitise to true in getNodeParams has no effect.

Troubleshooting

dxp metadata-registry 476